CN207164103U - The high pressure partial pressure arm and high-voltage electric energy meter of a kind of resistive-capacitive voltage divider - Google Patents

Abstract

The high pressure partial pressure arm and high-voltage electric energy meter of a kind of resistive-capacitive voltage divider are the utility model is related to, belongs to electric-power metering technical field.The high pressure partial pressure arm, applied in high-voltage electric energy meter, the high pressure partial pressure arm includes：RC divider.The RC divider includes：First circuit board and multiple first electric capacity and the multiple first resistors being installed on the first circuit board.The multiple first resistor to form capacitance-resistance string with interlaced connect of the multiple first electric capacity, and first electric capacity is low-voltage capacitance, the low resistance that the first resistor is.The high pressure partial pressure arm uses gives high-voltage electric energy meter power supply using after the interlaced series connection partial pressure of multiple first resistors and multiple first electric capacity, small volume, low in energy consumption, avoid using conventional voltage transformer be depressured caused by ferromagnetic resonance problem and risk.The utility model possesses：The plurality of advantages such as good reliability, safety coefficient are high, insulation effect is good, small volume, low in energy consumption, cost is low.

Description

The high pressure partial pressure arm and high-voltage electric energy meter of a kind of resistive-capacitive voltage divider

Technical field

The utility model belongs to electric-power metering technical field, and in particular to the high pressure partial pressure arm and high pressure of a kind of resistive-capacitive voltage divider Electric energy meter.

Background technology

At present in China 6-35kV power distribution network, most traditional way of energy measuring is to use electromagnetic type high tension voltage Transformer, current transformer and low -voltage Watt -hour meter combine, and three units separate independently of each other.When voltage, Current Mutual Inductance When device carries out separately installed with low -voltage Watt -hour meter, because low -voltage Watt -hour meter is arranged on low-pressure side, easily by stealing.Develop into later Three units are combined, make traditional high-voltage electric energy meter.The high-voltage electric energy meter is by voltage, current transformer and low pressure Electric energy meter is integrally formed installed in high-pressure side, although can avoid by stealing, because primary side and secondary side need height Pressure-resistant insulation, therefore volume is big, heavy without easy to install, and ferromagnetic resonance is easily produced using this high-voltage mutual inductor.Its Secondary, during inspection, these three elements need separately that verification, the accuracy of measuring grade of whole high-voltage electric energy meter are difficult to demarcate.

For traditional high-voltage electric energy meter, there is the Novel electric that voltage sampling metering and power taking are carried out using high-voltage capacitance Can table.Relative to conventional high-tension electric energy meter, novel high-pressure electric energy meter solves its related defects, but new high-voltage electric energy meter is still So there is many deficiencies.Because high-voltage capacitance works long hours and affected by temperature, aging can be produced and decayed, together When, the self-healing performance of electric capacity also leads to the change of capacitance in the course of the work.Additionally, due to the self-healing of high-voltage capacitance in itself Performance, electric capacity inside partial pressure is uneven, and the portion voltage that electric field is more concentrated is high, and leakage current can be caused big；And for pure electricity Hold the power supply of partial pressure, in the case of without hindrance buffer resistance, electric capacity is in short-circuit condition when by high-frequency percussion, poor reliability, simultaneously The change of Leakage Current and internal electric field skewness can all disturb other circuits, influence high pressure meter accuracy；In addition, high pressure Axial electric capacity is easily forming air gap directly across between two-phase high pressure after fill insulant along face, in overvoltage or In the case of being impacted, because creep age distance not enough and existing to climb electrical breakdown or leakage current along face and increase causes error in dipping to change Risk；And the complex manufacturing of high-voltage capacitance, cost are high.Therefore, a kind of new high pressure way to take power is needed badly to solve These defects of high-voltage electric energy meter.

Utility model content

In consideration of it, the purpose of this utility model is the high pressure partial pressure arm and high-voltage electric energy meter for providing a kind of resistive-capacitive voltage divider, Effectively to improve above mentioned problem.

What embodiment of the present utility model was realized in：

The utility model embodiment provides a kind of high pressure partial pressure arm, applied in high-voltage electric energy meter, the high pressure partial pressure Arm includes：RC divider.The RC divider includes：First circuit board and be installed on it is multiple on the first circuit board First electric capacity and multiple first resistors.The multiple first resistor and the interlaced formation resistance of connecting of the multiple first electric capacity Hold string, first electric capacity is low-voltage capacitance, and the first resistor is low resistance.

In the utility model preferred embodiment, the first resistor and described is not installed with the first circuit board The region of first electric capacity is provided with multiple first hollow-out slot bores.

In the utility model preferred embodiment, first electric capacity is N number of, and the first resistor is N+1, N+1 The individual first resistor to form capacitance-resistance string with interlaced connect of N number of first electric capacity, and the both ends of the capacitance-resistance string are institute State first resistor.

In the utility model preferred embodiment, the N+1 first resistors and N number of institute in the capacitance-resistance string are formed State that the first electric capacity is S-type to be arranged on the first circuit board.

In the utility model preferred embodiment, one end of the first circuit board is provided with the first locating part, described The other end of first circuit board is provided with the second locating part.

In the utility model preferred embodiment, the high pressure partial pressure arm also includes：Insulating sleeve, the resistive-capacitive voltage divider Device is arranged in the insulating sleeve, filled with the filler being made up of insulating materials, the filler in the insulating sleeve For forming insulating wall at multiple first hollow-out slot bores on the first circuit board.

In the utility model preferred embodiment, the insulating sleeve is externally provided with multiple full skirts, and the full skirt is by exhausted The annular relief that edge material is formed.

The utility model embodiment additionally provides a kind of high-voltage electric energy meter, including：For being coupled the first wiring of A phase current potentials Terminal, the second binding post for being coupled B phase current potentials, the 3rd binding post for being coupled C phase current potentials and two are as described above Resistive-capacitive voltage divider high pressure partial pressure arm.Two high pressure partial pressure arms are the first high pressure partial pressure arm and the second high pressure partial pressure arm.Institute State the first binding post to connect by the capacitance-resistance series winding of the first high pressure partial pressure arm with second binding post, described first is high Press partial pressure arm to be used for the voltage alternate to AB and carry out partial pressure.3rd binding post passes through described with second binding post The capacitance-resistance series winding of second high pressure partial pressure arm connects, and the second high pressure partial pressure arm is used for the voltage alternate to CB and carries out partial pressure.

In the utility model preferred embodiment, the high-voltage electric energy meter also includes：First gold utensil, the second gold utensil, Three gold utensils, the first supporting insulator and the second supporting insulator, first binding post, institute are provided with first gold utensil State and second binding post is provided with the second gold utensil, the 3rd binding post is provided with the 3rd gold utensil, it is described First supporting insulator is connected with first gold utensil, and second supporting insulator is connected with the 3rd gold utensil.

In the utility model preferred embodiment, the high-voltage electric energy meter also includes：First housing, second shielding cover With the 3rd housing, first housing is connected with first gold utensil, and the second shielding cover connects with second gold utensil Connect, the 3rd housing is connected with the 3rd gold utensil.

The beneficial effects of the utility model are：

The utility model embodiment provides the high pressure partial pressure arm and high-voltage electric energy meter of a kind of resistive-capacitive voltage divider, with prior art Compare, the high pressure partial pressure arm uses multiple first resistors and the interlaced series connection partial pressure of multiple first electric capacity, small volume, power consumption It is low, solve the problems such as Ferroresonance Overvoltage Caused by PT, high-frequency percussion short circuit, axially climb electricity.Further, since the RC divider The resistance connected is equal equal with capacitor's capacity, and therefore, the partial pressure of individual unit is uniform, and Electric Field Distribution is uniform, improves The antijamming capability of circuit.The utility model possesses：Good reliability, safety coefficient are high, insulation effect is good, small volume, power consumption The low, plurality of advantages such as cost is low.

Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification In become apparent, or understood by implementing the utility model embodiment.The purpose of this utility model and other advantages It can realize and obtain by specifically noted structure in the specification, claims and accompanying drawing write.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other accompanying drawings.By shown in accompanying drawing, above and other purpose of the present utility model, feature and advantage will more Clearly.The identical reference instruction identical part in whole accompanying drawings.Do not painted by actual size equal proportion scaling deliberately Accompanying drawing processed, it is preferred that emphasis is show purport of the present utility model.

Fig. 1 shows a kind of structural representation for high pressure partial pressure arm that the utility model embodiment provides.

Fig. 2 shows the structural representation of the RC divider in Fig. 1 that the utility model embodiment provides.

Fig. 3 shows a kind of structural representation for high-voltage electric energy meter that the utility model embodiment provides.

Icon：10- high pressure partial pressure arms；11- RC dividers；111- first circuit boards；The electric capacity of 112- first； 113- first resistors；The locating parts of 114- first；The locating parts of 115- second；The hollow-out slot bores of 116- first；15- insulating sleeves； 151- full skirts；152- fillers；30- high-voltage electric energy meters；The gold utensils of 31- first；The gold utensils of 32- second；The gold utensils of 33- the 3rd； The supporting insulators of 34- first；The supporting insulators of 35- second；The housings of 36- first；The current transformers of 361- first； 362- first line plates；37- second shielding covers；The wiring boards of 371- second；The housings of 38- the 3rd；381- tertiary circuits Plate；The current transformers of 382- second；39- optical fiber；40- metal sleeves；41- resitstance voltage dividers.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of.

Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.

, it is necessary to explanation in description of the present utility model, term " centre ", " on ", " under ", "left", "right", The orientation or position relationship of the instructions such as " interior ", " outer " be based on orientation shown in the drawings or position relationship, or practicality newly Type product using when the orientation usually put or position relationship, be for only for ease of description the utility model and simplify and describe, and It is not instruction or implies signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore It is not intended that to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and It is not intended that instruction or hint relative importance.

In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through It is indirectly connected, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition Solve concrete meaning of the above-mentioned term in the utility model.

Existing novel high-pressure electric energy meter generally use high-voltage capacitance carries out voltage sampling, general yet with high-voltage capacitance All it is axial, body is longer, after the axial direction device embedding of this length, because the filler used in embedding and device top layer do not glue Close, easily form air gap.This air gap can cause the creep age distance between two-phase high pressure small, be produced when by impacting with high pressure The raw creeping discharge in face vertically and the bubble-discharge formed by the device surface, and shelf depreciation, greatly have impact on The insulating properties and reliability of product.Therefore, in order to solve the above problems, the utility model embodiment provides a kind of capacitance-resistance point The high pressure partial pressure arm 10 of pressure, as shown in Figure 1.The high pressure partial pressure arm 10 includes：RC divider 11 and insulating sleeve 15.

The RC divider 11 is installed in the insulating sleeve 15, and high-voltage electric energy meter is supplied for partial pressure power taking.It is preferred that Ground, as shown in Fig. 2 the RC divider 11 includes：First circuit board 111 and it is installed on the first circuit board 111 Multiple first electric capacity 112 and multiple first resistors 113.

The first circuit board 111 is used to install multiple first electric capacity 112 and multiple first resistors 113, during installation, according to The design of S types is by all 113 and first electric capacity of first resistor, 112 uniform distributing installations on the first circuit board 111.In order to Increase creepage distance, improve security performance etc. during operation, it is preferable that described the is not installed with the first circuit board 111 The region of one electric capacity 112 and the first resistor 113 is provided with multiple first hollow-out slot bores 116, it is further preferred that this first The part that the front/rear both sides of circuit board 111 are fitted without the electric capacity 112 of first resistor 113 and first is hollow out.In addition, in order to It is easy to fix the first circuit board 111, it is preferable that one end of the first circuit board 111 is provided with the first locating part 114, and this The other end of one circuit board 111 is provided with the second locating part 115.Wherein it is preferred to first locating part 114 can be one Individual raised spacing catwalk, second locating part 115 can also be a raised spacing catwalk.

The multiple first resistor 113 to form capacitance-resistance string with interlaced connect of the multiple first electric capacity 112, preferably Ground, the first resistor 113 are N+1, and first electric capacity 112 is N number of.N+1 first resistors 113 with it is N number of described First electric capacity, 112 interlaced series connection, i.e., according to first resistor 113, the first electric capacity 112, first resistor 113, the first electric capacity 112 ... first electric capacity 112, the rule of first resistor 113 are sequentially connected in series to form capacitance-resistance string, form the N+1 in the capacitance-resistance string The individual first resistor 113 with N number of first electric capacity 112 is S-type is arranged on the first circuit board 111.Described first The both ends of circuit board 111 are provided with the first resistor 113, first electricity positioned at described one end of first circuit board 111 Resistance 113 is connected with the first terminals, positioned at the wiring of the first resistor 113 and second of the other end of first circuit board 111 End connection.When the RC divider 11 is applied in electric energy meter, first terminals pass through the derided capacitors of series connection and pressure-sensitive It is coupled the first binding post of A phase current potentials, the second binding post for being coupled B phase current potentials or for being coupled with being used for after resistance The 3rd binding post electrical connection of C phase current potentials.Second terminals with after the derided capacitors by connecting and piezo-resistance with For being coupled the first binding post of A phase current potentials, the second binding post for being coupled B phase current potentials or for being coupled C phase current potentials The 3rd binding post electrical connection.Wherein, derided capacitors and piezo-resistance in above-mentioned are in parallel.

Wherein it is preferred to the N+1 first resistors 113 and N number of first electric capacity, 112 S-type arrangement in above-mentioned Form on the first circuit board 111 or by multiple small S types, specifically, first circuit board 111 is divided into In lower region, lower regions are used to install first resistor 113, and intermediate region is used to install the first electric capacity 112, the electricity of lower regions The electric capacity of resistance and intermediate region is interlaced, forms multiple small S types curves, and it is in integrally cosine or sine or square-wave-shaped, such as Fig. 2 In arrangement mode shown in.

In order to cost-effective, it is preferable that all first resistors 113 are low pressure small resistor, the first all electric capacity 112 It is low pressure small capacitances, due to the simple production process of single small resistor and small capacitances, so cost is low.It is further preferred that First electric capacity 112 is CBB low-voltage capacitances, i.e. polypropylene low-voltage capacitance.For mica capacitor, the CBB low-voltage capacitances Nonpolarity, insulation impedance is high, and self-healing property is strong etc., can further improve the reliability of electric energy meter.The first resistor 113 be line around The low resistance of type, good shock resistance effect can be played.

Wherein it is possible to according to pressure-resistant, the power of single first resistor 113, single the pressure-resistant of first electric capacity 112, capacitance etc. The voltage of relevant parameter and accessed power network determines the quantity of the electric capacity 112 of first resistor 113 and first.

The RC divider 11 is interlaced by first resistor 113 (wire-wound resistor) and the first electric capacity 112 (CBB electric capacity) Powered after partial pressure of connecting to high-voltage electric energy meter.The resistance connected by the RC divider 11 is equal and capacitor's capacity phase Deng therefore, the partial pressure of individual unit is uniform, and Electric Field Distribution is uniform, i.e., the electric capacity that the RC divider 11 is connected is first Electric capacity 112, therefore, the capacitor's capacity connected are equal；The resistance that the RC divider 11 is connected is first resistor 113, Therefore, the resistance connected is equal.In addition, the RC divider 11 is connected using the electric capacity 112 of first resistor 113 and first Partial pressure, it is small volume, low in energy consumption, avoid using conventional voltage transformer be depressured caused by ferromagnetic resonance problem and risk.

RC divider 11 is installed in the insulating sleeve 15, the insulating sleeve 15 is applied in high-voltage electric energy meter.For Improve the insulating properties between gold utensil, it is preferable that filled with the filler being made up of insulating materials in the insulating sleeve 15 152, the filler 152 is used to form insulation at multiple first hollow-out slot bores 116 on the first circuit board 111 Wall.In other words, a stifled insulation can be formed after insulating materials embedding between the metal pins being exposed on first circuit board 111 Wall, the creep age distance between two metal pins is added, so as to increase by two alternate creep age distances, solve axial high-tension electricity The problems such as creeping discharge that Rong Yin surfaces do not bond and formed and bubble-discharge, improve two alternate insulating properties.

In addition, in order to further increase the creep age distance outside two alternate insulating sleeves 15, it is preferable that the insulating sleeve 15 Multiple full skirts 151 are externally provided with, the full skirt 151 is the annular relief being made up of insulating materials.It is it is further preferred that the plurality of Annular relief is arranged at outside the insulating sleeve 15 at equal intervals, safe for operation to ensure for increasing the creep age distance of external insulation. Wherein, the distance between adjacent annular lug boss requires to design according to the standard of insulator, and its security performance is higher.Wherein, it is excellent Selection of land, the plurality of annular relief and insulating sleeve 15 are formed in one structure.

Wherein, the material of the insulating sleeve 15 can be plastic material or quality of rubber materials or glass fibre； And the species of plastic material can have it is a variety of, for example, polyethylene terephthalate (Polyethylene Terephthalate, PET), polyethylene (polyethylene, PE), polypropylene (Polypropylene, PP) etc..Rubber material The species of matter can also have it is a variety of, for example, silica gel, neoprene, fluorine glue, SGA etc..In the present embodiment, it is preferable that The insulating sleeve 15 is glass fibre sleeve.

Wherein, the material for the filler 152 being filled in insulating sleeve 15, the i.e. insulating materials can be plastic materials Or quality of rubber materials；And the species of plastic material can have it is a variety of, for example, polyethylene terephthalate (Polyethylene terephthalate, PET), polyethylene (polyethylene, PE), polypropylene (Polypropylene, PP) etc..The species of quality of rubber materials can also have it is a variety of, for example, silica gel, neoprene, fluorine glue, acrylic acid Ester gum etc..In the present embodiment, it is preferable that the material of insulating materials can be silica gel.

The utility model embodiment additionally provides a kind of high-voltage electric energy meter 30, as shown in figure 3, the high-voltage electric energy meter 30 wraps Include：Two above-mentioned 10, two resitstance voltage dividers 41 of high pressure partial pressure arm, the first gold utensil 31, the second gold utensil 32, the 3rd gold utensil 33, First supporting insulator 34, the second supporting insulator 35, the first housing 36, second shielding cover 37, the 3rd housing 38, installation In the first current transformer 361 in the first housing 36 and first line plate 362, be installed in second shielding cover 37 second Wiring board 371, the current transformer 382 of tertiary circuit plate 381 and second being installed in the 3rd housing 38.

Wherein, two above-mentioned high pressure partial pressure arms 10 are respectively the first high pressure partial pressure arm and the second high pressure partial pressure arm.

Wherein, two resitstance voltage dividers 41 are respectively first resistor divider and second resistance divider.Wherein, preferably Ground, first resistor divider is installed in the first high pressure partial pressure arm, and second resistance divider is installed on into the second high pressure partial pressure In arm.Wherein, the resitstance voltage divider 41 is installed in the insulating sleeve 15, for being changed after partial pressure to the metering on wiring board Unit provides sampled voltage.

Wherein, the resitstance voltage divider 41 in above-mentioned, can be single high-tension resistive or multiple electricity of series connection Resistance.In order to cost-effective, in the present embodiment, resitstance voltage divider 41 is the resistance string being in series by multiple second resistances.It is excellent Selection of land, all second resistances are low resistance, and scribble insulating materials on the surface of resistance, due to the life of single small resistor Production. art is simple, so cost is low.In addition, the temperature drift of low resistance is small, and temperature drift caused by every degree Celsius of change can accomplish 10ppm Hereinafter, and the temperature drift of high-tension resistive can only be controlled in below 25ppm, therefore, further increase the measurement accuracy of electric energy meter.Enter Preferably, the second resistance is the low resistance being made up of metal oxide film to one step, for line geometric pattern resistance, distribution-free Electric capacity and inductance, it can further improve the measurement accuracy of electric energy meter.

Wherein, the quantity of the second resistance according to relevant parameters such as the pressure-resistant of the second resistance, power and can be connect Enter the voltage of power network to determine.

Wherein it is preferred to one end of first second resistance in the resistance string is connected with the 3rd terminals, finally One end of one second resistance is connected with the 4th terminals.

By the resistance that the resitstance voltage divider 41 is connected is identical, therefore, Electric Field Distribution is uniform, i.e. the electric resistance partial pressure The resistance that device 41 is connected is second resistance, and therefore, the resistance connected is identical.In addition, the resitstance voltage divider 41 is adopted The mode connected with multiple small resistors samples to voltage, and small volume is low in energy consumption, solves and samples electricity using voltage transformer Caused by pressure the problem of ferromagnetic resonance.

First gold utensil 31 is connected by the high pressure partial pressure arm 10 with second gold utensil 32, second gold utensil 32 It is connected by the high pressure partial pressure arm 10 with the 3rd gold utensil 33.Wherein, first gold utensil 31 and described second will be located at The high pressure partial pressure arm 10 between gold utensil 32 is named as the first high pressure partial pressure arm, positioned at second gold utensil 32 and the described 3rd The high pressure partial pressure arm 10 between gold utensil 33 is named as the second high pressure partial pressure arm.

Wherein, first binding post is connected with second binding post by first resistor divider, and also Connect by the capacitance-resistance series winding of the first high pressure partial pressure arm, the first high pressure partial pressure arm divides for the voltage alternate to AB Pressure.First terminals of the capacitance-resistance string in the first high pressure partial pressure arm pass through the derided capacitors of series connection and the first binding post electricity Connection, the derided capacitors and the second binding post that the second terminals of the capacitance-resistance string in the first high pressure partial pressure arm pass through series connection Connection.3rd terminals of the first resistor divider after low pressure divider resistance of connecting with the first binding post by being electrically connected Connect, the 4th terminals in the first resistor divider are connected with the second binding post.

Wherein, second binding post is connected with the 3rd binding post by second resistance divider, and also Connect by the capacitance-resistance series winding of the second high pressure partial pressure arm, the second high pressure partial pressure arm divides for the voltage alternate to CB Pressure.It is coupled B phases with being used for after the derided capacitors that first terminals of the capacitance-resistance string in the second high pressure partial pressure arm pass through series connection Second binding post of current potential electrically connects, and the second terminals of the capacitance-resistance string in the second high pressure partial pressure arm pass through point of series connection Connected after voltage capacitance with the 3rd binding post for being coupled C phase current potentials.3rd terminals of the second resistance divider lead to Electrically connected after crossing series connection low pressure divider resistance with the second binding post for being coupled B phase current potentials, the second resistance divider The 4th terminals and it is described be used for be coupled C phase current potentials the 3rd binding post electrically connect.

Wherein, the first binding post for being coupled A phase current potentials is provided with the first gold utensil 31, is set on the second gold utensil 32 There is the second binding post for being coupled B phase current potentials, the 3rd gold utensil 33 is provided with the 3rd terminals for being coupled C phase current potentials Son.

First supporting insulator 34 interacts with second supporting insulator 35, for supporting the high pressure partial pressure Arm 10.Preferably, first supporting insulator 34 is connected with first gold utensil 31.Wherein, the first supporting insulator 34 with The connection of first gold utensil 31 can have it is a variety of, for example, it may be connected by screw rod with middlewares such as nut, screws, Can be connected by the mode such as bonding, welding, can also be and be connected by groove with the combination of projection etc..Yu Benshi Apply in example, it is preferable that the first supporting insulator 34 is connected by screw bolts with the first gold utensil 31.Wherein it is preferred to first support The bottom of insulated terminal is additionally provided with metal sleeve 40, is easily installed fixed high-voltage electric energy meter 30.

Second supporting insulator 35 interacts with first supporting insulator 34, for supporting the high pressure partial pressure Arm 10.Preferably, second supporting insulator 35 is connected with the 3rd gold utensil 33.Wherein, the second supporting insulator 35 with The connection of 3rd gold utensil 33 can have it is a variety of, for example, it may be connected by screw rod with middlewares such as nut, screws, Can be connected by the mode such as bonding, welding, can also be and be connected by groove with the combination of projection etc..Yu Benshi Apply in example, it is preferable that the second supporting insulator 35 is connected by screw bolts with the 3rd gold utensil 33.Wherein it is preferred to second support The bottom of insulated terminal is additionally provided with metal sleeve 40, is easily installed fixed high-voltage electric energy meter 30.

First housing 36 is connected with first gold utensil 31, for protection setting in first housing 36 Component and the first current transformer 361 on first line plate 362 are avoided by electromagnetic interference, to improve the stabilization of its work Property and measurement accuracy etc..Wherein, the connected mode of the first housing 36 and the first gold utensil 31 can have a variety of, in the present embodiment In, it is preferable that the end of the first housing 36 and the first gold utensil 31 is bolted.

Wherein it is preferred to first switch power supply, the first metering converting unit and light are integrated with the first line plate 362 Electric transducer.

Wherein, operationally, voltage alternate AB is via resitstance voltage divider 41 and low pressure partial pressure electricity for the high-voltage electric energy meter 30 The first metering converting unit is sent to after resistance series connection partial pressure, for measuring the voltage of A phases.The electric current of A phases is through the first current transformer It is changed into a low current signal after 361 samplings and is sent to the first metering converting unit, for measures the electric current of A phases.Electricity alternate AB Pressure provides a working power via first switch power supply is sent to after the partial pressure of RC divider 11, for the first metering converting unit, Ensure the needs of its normal work.

Wherein, after voltage between AB is alternate is via resitstance voltage divider 41 and low pressure divider resistance partial pressure, after its partial pressure Voltage may diminish to less than 1V.

Wherein, first current transformer 361 is connected with the first metering converting unit, the first switch power supply and the first meter Converting unit connection is measured, RC divider 11 is connected with first switch power supply, and resitstance voltage divider 41 and first measures converting unit Connection.Wherein, the first metering converting unit is used to measure the parameters such as the voltage, electric current, power of A phases, and by acquisition Continuous data is converted into optical signal through optical-electrical converter, is delivered to the second wiring board 371 by optical fiber 39, calculates and close first energy consumption.

The second shielding cover 37 is connected with second gold utensil 32, for protection setting in the second shielding cover 37 Component on second wiring board 371, is avoided by electromagnetic interference, to improve the stability of its work and measurement accuracy etc.. Wherein, second shielding cover 37 and the connected mode of the second gold utensil 32 can have a variety of, in the present embodiment, it is preferable that the second screen The end for covering set 37 and the second gold utensil 32 is bolted.

Wherein it is preferred to be integrated with second wiring board 371 second switch power supply, processing unit, optical-electrical converter and Communication unit.

Wherein, the optical-electrical converter be used for by first metering converting unit conveying optical signal be converted into electric signal transmission to Processing unit, meanwhile, the optical-electrical converter is used to the optical signal of the second metering converting unit conveying being converted into electric signal transmission To processing unit, so that processing unit is handled the continuous data of A phases and the continuous data of C phases, calculate it and close first energy consumption, And it is transferred to terminal by communication unit (mode such as wired or wireless).

Wherein, voltage alternate AB after the partial pressure of RC divider 11 in the first high pressure partial pressure arm via being sent to second switch Power supply, in addition, voltage alternate CB is electric via second switch is sent to after the partial pressure of RC divider 11 in the second high pressure partial pressure arm Source, a working power is provided for processing unit, ensures the needs of its normal work.Wherein, second switch power supply and processing are single Member connection, processing unit are connected with photovoltaic converter and communication unit.

3rd housing 38 is connected with the 3rd gold utensil 33, for protection setting in the 3rd housing 38 Component and the second current transformer 382 on tertiary circuit plate 381, are avoided by electromagnetic interference, to improve the steady of its work Qualitative and measurement accuracy etc..Wherein, the connected mode of the 3rd housing 38 and the 3rd gold utensil 33 can have a variety of, in this implementation In example, it is preferable that the end of the 3rd housing 38 and the 3rd gold utensil 33 is bolted.

Wherein it is preferred to the 3rd Switching Power Supply, the second metering converting unit and light are integrated with the tertiary circuit plate 381 Electric converter.

Wherein, operationally, voltage alternate CB is via being sent to after the partial pressure of resitstance voltage divider 41 for the high-voltage electric energy meter 30 Two metering converting units, for measuring the voltage of A phases.The electric current of C phases is changed into one small after the sampling of the second current transformer 382 Current signal is sent to the second metering converting unit, for measuring the electric current of C phases.Voltage alternate CB divides via RC divider 11 The 3rd Switching Power Supply is sent to after pressure, a working power is provided for the second metering converting unit, ensures the needs of its normal work.

Wherein, after voltage alternate CB is via the partial pressure of resitstance voltage divider 41, the voltage after its partial pressure may diminish to less than 1V.

Wherein, second current transformer 382 is connected with the second metering converting unit, the 3rd Switching Power Supply and the second meter Converting unit connection is measured, RC divider 11 is connected with the 3rd Switching Power Supply, and resitstance voltage divider 41 and second measures converting unit Connection.Wherein, the second metering converting unit is used to measure the parameters such as the voltage, electric current, power of C phases, and by acquisition Continuous data is converted into optical signal through photovoltaic converter, is delivered to the second wiring board 371 by optical fiber 39, calculates and close first energy consumption.

In summary, the utility model embodiment provides the high pressure partial pressure arm and high-voltage electric energy meter of a kind of resistive-capacitive voltage divider. The high pressure partial pressure arm includes：RC divider and insulating sleeve.The resistance connected by the RC divider it is equal and Capacitor's capacity is equal, and therefore, the partial pressure of individual unit is uniform, and Electric Field Distribution is uniform.In addition, the RC divider is using N+1 Line geometric pattern small resistor and the interlaced series connection partial pressure of N number of CBB electric capacity, it is small volume, low in energy consumption, avoid using conventional voltage mutual inductance Ferromagnetic resonance problem and risk caused by device decompression.In addition, the filler being filled in insulating sleeve can be in first circuit board On multiple described first engrave at groove emptying aperture formation insulating wall, add two alternate creep age distances, solve axial high-tension electricity The problems such as creeping discharge that Rong Yin surfaces do not bond and formed and bubble-discharge, improve two alternate insulating properties.Pass through resistance Hold the mode of series connection, serve the effect of anti-high-frequency percussion.Relative to traditional voltage transformer way to take power, because being connect in power network There are numerous transformers in perception, RC divider is in capacitive, is advantageous to carry out reactive-load compensation to power network.The utility model has It is standby：Measuring accuracy height, good reliability, safety coefficient are high, insulation effect is good, small volume, low in energy consumption, cost is low, easy to use, suitable Many advantages, such as Ying Xingqiang.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. A kind of 1. high pressure partial pressure arm of resistive-capacitive voltage divider, it is characterised in that applied in high-voltage electric energy meter, the high pressure partial pressure arm bag Include：RC divider, the RC divider include：First circuit board and be installed on the first circuit board multiple first Electric capacity and multiple first resistors, the multiple first resistor to form capacitance-resistance with the multiple interlaced connect of first electric capacity String, first electric capacity is low-voltage capacitance, and the first resistor is low resistance.
2. 2. high pressure partial pressure arm according to claim 1, it is characterised in that described is not installed with the first circuit board The region of one resistance and first electric capacity is provided with multiple first hollow-out slot bores.
3. 3. high pressure partial pressure arm according to claim 1, it is characterised in that first electric capacity is N number of, the first resistor For N+1, the N+1 first resistors to form capacitance-resistance string with interlaced connect of N number of first electric capacity, the capacitance-resistance string Both ends are the first resistor.
4. 4. high pressure partial pressure arm according to claim 3, it is characterised in that form N+1 in the capacitance-resistance string described the One resistance and N number of first electric capacity is S-type is arranged on the first circuit board.
5. 5. high pressure partial pressure arm according to claim 1, it is characterised in that one end of the first circuit board is provided with first Locating part, the other end of the first circuit board are provided with the second locating part.
6. 6. high pressure partial pressure arm according to claim 2, it is characterised in that the high pressure partial pressure arm also includes：Insulating sleeve, The RC divider is arranged in the insulating sleeve, filled with the filling being made up of insulating materials in the insulating sleeve Thing, the filler are used to form insulating wall at multiple first hollow-out slot bores on the first circuit board.
7. 7. high pressure partial pressure arm according to claim 6, it is characterised in that the insulating sleeve is externally provided with multiple full skirts, institute It is the annular relief being made up of insulating materials to state full skirt.
8. A kind of 8. high-voltage electric energy meter, it is characterised in that including：For being coupled the first binding post of A phase current potentials, for being coupled B Such as claim 1-7 of second binding post of phase current potential, the 3rd binding post for being coupled C phase current potentials and two is any one The high pressure partial pressure arm of the item resistive-capacitive voltage divider, two high pressure partial pressure arms are the first high pressure partial pressure arm and the second high pressure partial pressure Arm；First binding post is connect with second binding post by the capacitance-resistance series winding of the first high pressure partial pressure arm, described First high pressure partial pressure arm is used for the voltage alternate to AB and carries out partial pressure；3rd binding post leads to second binding post The capacitance-resistance series winding for crossing the second high pressure partial pressure arm connects, and the second high pressure partial pressure arm divides for the voltage alternate to CB Pressure.
9. 9. high-voltage electric energy meter according to claim 8, it is characterised in that the high-voltage electric energy meter also includes：First gold utensil, Second gold utensil, the 3rd gold utensil, the first supporting insulator and the second supporting insulator, described first is provided with first gold utensil Binding post, second binding post is provided with second gold utensil, being provided with the described 3rd on the 3rd gold utensil connects Line terminals, first supporting insulator are connected with first gold utensil, second supporting insulator and the 3rd gold utensil Connection.
10. 10. high-voltage electric energy meter according to claim 9, it is characterised in that the high-voltage electric energy meter also includes：First shielding Set, second shielding cover and the 3rd housing, first housing are connected with first gold utensil, the second shielding cover and institute The connection of the second gold utensil is stated, the 3rd housing is connected with the 3rd gold utensil.